Isaac w



(No Model.)

I. W. SWALLOW.

QGRATE BAR FOR LOGOMOTIVBS.

No. 288,599. Patented NOV. 13, 1883.

rvl4 PUERS. Pmwiimagraphnr. wnsmngmn, 11C.

NITED STATESA PATENT OFFICE.,

IsAAc w. swAIILow, Vor KINGsroN,` PnN'NsYLvANIA.

G'RATE- BAR FORI LOCO'MOTIVES.

SPECIFICATION forming part of Letters Patent No.` 288,599, dated November 13, 1883,

i Application tiled August 22, 1883. (No model.)

@ all w/wnt it Ilz/:ty con/carla:

Beit known that I, ISAAC W. SWALLOW, a citizen of the United States, residing at Kingston,in the county of Luzerne and State of Pennsylvania, have ,invented certain new and useful Improvements in Grate-Bars for Locomotives; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which :it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which forma part of this specication.

Figure l of the drawings .is a representation of a plan View of my grate-bar attachment for locomotives. Fig. 2 is a bottom view of the same. Fig. 3 is a cross-section on line y y in Fig. l, and Fig. 4 is a cross-section on line x :v in Fig. l. These two figures show the closed and open grate.

This inventionha-s relation to grate-bars for locomotives; and it' consists in the construction and novel arrangement of devices, as will p be hereinafter more fully s r-i-bed, and particularly pointed out in the claims appended.

The objects ofthe invention are to produce a grate for locomotive-engines, that while serving as a grate may at the same time be operated to clean and remove the'ashes from the bottom of the fire without injuring or weakening the fire, and without the necessity of opening the nre-box, and while the engine is raising steam, thus preventing a wasting of the volume of heat in the furnace, and a reduction of the amount of steam while cleaning and renewing the iire; in so arranging the tumblerbars that the fire may be cleaned along the side walls and in the corners as well asin the middle of the fire-box, thereby enabling the operator to keep the fire at the sides and corners in the same condition as in the middle,which is of great importance from the fact that there is where the greatest amount of steam in generated, because nearer to the water-pipes,and the place under the present system .where the fire dies out first and is the most diflicult to renew. t

Referring by letter to the accompanying drawings, a designates the fire-box, which is rectangular in form, and is provided with the hollow7 longitudinal water-bars b b, arranged wrought-iron, are smaller thanthe water-bars b b, andmrest when in their normal position in notches -in the upper edges of the cross-bars c c, on a level slightly lower than that of the water-bars, in order that the latter may protect them and prevent them from being so rapidlybnrned out as they would otherwise be.

The lower ends of the pi'voted arms f arcstraight, andare connected by slotted bars g g', their ends being pivoted in the slots h h and hf by nut-bolts. The upper ends of the pivoted arms f are curved as shown, so that when the tumbler-bars d are raised they will come directly :jover the space between the water-bars of each pair.

At one side of the grate a tumbler-bar, ,'is arranged, to be drawn under the water-bar b next to it, instead of being raised over, as the other tumbler-bars, d, are, for the reason that the single bar t' would not operate if con neoted to a pivoted arm, as the others are,the side wall of the fire-box at that side being in theway. The single bar t is therefore connected to two inclined transverse arms, 7c 7c, near its ends, by nut-bolts Z, and these arms 7c k are connected at their other ends by nut-bolts m to `short rigid armsn n, depending from the shaking-rod o, which has bearings; in the end walls of the nre-box and in the transverse cross-bars c c. rIhe notches p for the single bar c are longer and deeper than those for the bars d, so that the. singlebar i can be drawn under its bar b when. the grate is shaken. The shaking-rod ois also provided with arms q q, which depend through the spaces between the adjacent cross-bars c c, and are pivotecbby nut-bolts in the slots h" of the slotted connecting-bars g g, so that all of the tumbler-bars are operated at one and the same ing the top surface of the grate smooth, and

e, esame 'one, as it is only necessary to take off two or tlree nuts and remove the bolts to get out any part of the several pieces. The fire can be stirred or cleaned while the locomotive is in motion without reducing the amount of steam.

t By this construction there is a saving in time and labor, as the whole operation is peformed in a few minutes by the use of the shaking-lever. It saves the furnace man or operator from a lgreat deal of exposure tothe fire, and obviates the danger now rexperienced by so many personshaving their faces, eyes, hair, hands, and 'clothing burned while cleaning and renewing the fire, as it dispenses with the necessity of opening the iire-box door except to add fuel.

Itvwill work in hard or soft coal burners, and will save fuel, an item of the greatest importance at the present time, as it removes the ashes only and saves the good fire and nnb'urned coal, which by the present method is mostly wasted from the fact that first one end is knocked out and cleaned with a poker and vslash-bar, then the other end is subjected to the same operation, taking ashes, re, and unburned fuel all together, thus causing great waste, which, until my improvement, could not be avoided.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, isi 1. A fire-grate for locomotive fire-boxes, consisting of a series of water-bars and movable tumbler-bars extending longitudinally of the lire-box beside and parallel with the water-bars, and arranged to be operated from the exterior of the fire-box by a shaking-rod, and its connections to raise and lower said tumblerbars on curvilinear lilies, and thereby remove the ashes from the bottom of the lire from the sides, corners, and middle of the same, substantially as specified.

2. The combination, with the pairs of water-bars b b and notched cross-bars c e, of the tumblerbars d d d, removably connected to 'the pivoted curved arms f, the slotted connecting-bars g g, connected to the shaking-rod o, the single tumble-bar i, removably connected to the inclined transverse arms k k, connected in turn to the rigid arms n n on the shaking-rod, and arms q q, connecting` the rod o and the connecting-bars g g, substantially as speciied.

In testimony whereof I affix my signature in presence of two witnesses.

ISA AC V. SVALLOVV.

lVitnesses:

B. F. AKERLEY, EDWARD H. HOUSE. 

